摘要
The precise microscopic feature of carbon-carbon（C/C） composites is essential {or an accurate predic tion of their mechanical behavior. After fabrication, actual microscopic feature differs from simple ideal spatial model. Micro computed lomography（CT） scan can well describe internal microstruetures of composites. Therefore, a reconstructed model is developed based on mireo-CT, by a series of prodcedures including extrac tlng components, generating new binary images and establishing a finite element （FE） model. Compared with the model designed by reconstructed commercial software MIMICS. the presented reconstructed FE model is superior in terms of high mesh quality and eontrollable mesh cluantity. The precision of the model is verified by experiment.
The precise microscopic feature of carbon-carbon(C/C)composites is essential for an accurate prediction of their mechanical behavior.After fabrication,actual microscopic feature differs from simple ideal spatial model.Micro-computed-tomography(CT)scan can well describe internal microstructures of composites.Therefore,a reconstructed model is developed based on mirco-CT,by a series of prodcedures including extracting components,generating new binary images and establishing a finite element(FE)model.Compared with the model designed by reconstructed commercial software MIMICS,the presented reconstructed FE model is superior in terms of high mesh quality and controllable mesh quantity.The precision of the model is verified by experiment.
基金
supported by the National Natural Science Foundation of China (Nos.11272147,10772078)
the Aviation Science Foundation (No.2013ZF52074)
the State Key Laboratory of Mechanical Structural Mechanics and Control (No.0214G02)
the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
